{"id":"CVE-2026-103957","url":"https://www.cyber-defence.io/tools/cve/CVE-2026-103957","generatedAt":"2026-10-28T10:48:21.515Z","title":"Server-side request forgery in the OAuth2 discovery handling in Loom for AWS before 1.7.0 might allow an authenticated remote user to obtain the access token of another user of the deployment and to cause the application to issue requests to arbitrary…","description":"Server-side request forgery in the OAuth2 discovery handling in Loom for AWS before 1.7.0 might allow an authenticated remote user to obtain the access token of another user of the deployment and to cause the application to issue requests to arbitrary internal network locations, via a crafted discovery document address supplied when registering a tool server or remote agent configured for delegated authentication.\n\n\n\nTo remediate this issue, users should upgrade to version 1.7.0 or later.","published":"2026-10-02T19:16:40.000Z","lastModified":"2026-10-06T19:17:40.000Z","status":"Awaiting Analysis","sourceIdentifier":"ff89ba41-3aa1-4d27-914a-91399e9639e5","cvss":{"version":"4.0","score":8.2,"severity":"HIGH","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:P/VC:H/VI:N/VA:N/SC:H/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/M"},"cwe":["CWE-201","CWE-918"],"affected":[],"epss":{"score":0.004,"percentile":0.34117,"date":"2026-10-27","history":[{"date":"2026-10-03","score":0.00379,"percentile":0.29519}]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"high","text":"High impact if exploited, but EPSS currently rates exploitation as unlikely (0.40%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit."},"changes":[{"kind":"new","label":"New CVE","at":"2026-10-02T19:16:40.000Z","detail":{"score":"8.2","severity":"HIGH","publishedAt":"2026-10-02T19:16:39.893Z"},"summary":"New CVE, high severity (CVSS 8.2)."}],"references":[{"url":"https://aws.amazon.com/security/security-bulletins/2026-124-aws/","source":"ff89ba41-3aa1-4d27-914a-91399e9639e5"},{"url":"https://github.com/awslabs/loom/releases/tag/v1.7.0","source":"ff89ba41-3aa1-4d27-914a-91399e9639e5"},{"url":"https://github.com/awslabs/loom/security/advisories/GHSA-jcxf-gpf4-58hm","source":"ff89ba41-3aa1-4d27-914a-91399e9639e5"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-103957","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}